I have been standing on concrete for 30 plus years. Years ago i went to a podiatrist and had molds made of my feet and insert made from them. Best thing I ever did but still sucks standing hour after hour. Stretching and staying limber helps a lot too but do as I say not as I do because I don't do it enough and yes getting older really is a reality slap to your physical well being. Use it or loose it is really starting to be a good credo to go by.
"A beach is a place where a man can feel he's the only soul in the world that's real"
Getting older sucks physically. My feet were killing me, too. And still do if I over do it. I found that if I stretch my feet by pulling my big toe toward my shin at night, thae pain all but goes and stays away the next day. Give it a try.
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine